Hey i have a question. At the moment i'm trying to use a stylesheet which i get through a if. but it doesn't do anything.

here is my code at the moment. the variable $stylesheet will be variable but while testing i've setted it to normal

    <?php
    $stylesheet =  'normal'
if($stylesheet = 'small')
{
    $style = './sitestyle/stylesheetsmall.css';
}
if($stylesheet = 'big')
{
    $style = './sitestyle/stylesheetbig.css';
}
    else
    {
            $style = './sitestyle/stylesheet.css';
    }

    echo '<link rel="stylesheet" type="text/css" href="$style">';
    ?>

Thanks for your answers.